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Desmidiales
Desmids are an Order (biology)|order ('''Desmidiales''') of green algae, comprising around 40 genus|genera and 5,000[Van den Hoek, C., D. G. Mann, & H. M. Jahns, 1995. ''Algae:An Introduction to Phycology'', page 468. (Cambridge: Cambridge University Press). ISBN 0-521-30419-9] to 6,000[Brook, Alan J., 1981. ''The Biology of Desmids'', page 1. (Berkeley: University of California Press). ISBN 0-520-04281-6] species, found mostly but not exclusively in fresh water. Most are cell (biology)|unicellular, and are divided into two compartments separated by a narrow bridge or isthmus. Desmids assume a variety of highly symmetry|symmetrical and generally attractive shapes, which provide the basis for their classification. Each compartment has one chloroplast, and no flagellum|flagella. Sexual reproduction occurs through a process of conjugation, also found among the Zygnematales. These two groups are closely related, and may be united as the division Gamophyta. The desmids are sometimes treated as members of the Zygnematales, but more often given the separate order Desmidiales.
References
Further reading
- Brook, Alan J. (1981) ''The Biology of Desmids''. (University of California Press, ''Botanical Monographs'' '''16'''). ISBN 0-520-04281-6.
Links
- Algaebase: Zygnematophyceae
Category:Green algae
Category:Plant orders
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